For a position vector r = x + yĵ + zk the norm of the vector can be defined as

• A. <span style="text-decoration:overline;">r</span>
• B. <table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center><span style="text-decoration:overline;">r</span></center></td><td rowspan="2"></td></tr><td align="center">| <span style="text-decoration:overline;">r</span> |</td></table>
• C.
• D. <table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center><span style="text-decoration:overline;">r</span></center></td><td rowspan="2"></td></tr><td align="center"> <span style="text-decoration:overline;">r</span>.<span style="text-decoration:overline;">r</span> </td></table>
• E. <table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center><span style="text-decoration:overline;">r</span></center></td><td rowspan="2"></td></tr><td align="center">| <span style="text-decoration:overline;">r</span> |³</td></table>